Trout Species
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Greenback Cutthroat Trout
Characteristics
The only species native to Rocky Mountain National Park, and the Colorado state fish! Identified by the bright red markings underneath their jaw, as well as by dots that are concentrated near the tail.
Range
These fish inhabit the Coldwater streams/lakes found at the higher elevations of RMNP. They are beautiful fish, and they live in beautiful places!
Size
These fish average 6-12 inches, but they have been documented up to 20 inches in certain places within RMNP!
Rainbow Trout
Characteristics
The most common and recognizable of the trout species, the rainbow can be identified by the pink stripe along its side as well as by the uniform pattern of dots along the entire length of its body.
Range
Widely distributed throughout the majority of streams and rivers along Colorado's front range.
Size
Rainbows average 8-14 inches in length, although they certainly can grow larger.
Brown Trout
Characteristics
The brown trout is named after its color, which varies from dark brown to a beautiful deep orange. Brown trout possess both black and red dots, which run uniformly along the entire length of their bodies.
Range
Brown trout prefer to reside in warmer streams and rivers, like those found at the base of Rocky Mountain National Park.
Size
Brown trout average 10-16 inches in size, although they have been known to grow in excess of 20 inches in the waters surrounding RMNP.
Brook Trout
Characteristics
‘Brookies,’ as they are commonly known as, are known for their dark green color accompanied with red-orange spots along running the length of the fish.
Range
Brookies inhabit the coldwater streams, and some of the alpine lakes, within Rocky Mountain National Park.
Size
Brook trout are the smallest species of trout living within RMNP, typically growing no more than 12 inches in length. However, what they lack in size they make up for in their stunning coloration!